YEAR MONTH MEAN STDEV COUNT 2002 1 nan nan 0 2002 2 nan nan 0 2002 3 nan nan 0 2002 4 nan nan 0 2002 5 nan nan 0 2002 6 nan nan 0 2002 7 9.48929e+00 7.06867e+00 847 2002 8 5.82491e+00 4.82022e+00 670 2002 9 2.16293e+00 1.17121e+00 1001 2002 10 1.41394e+00 2.18283e+00 461 2002 11 9.34348e-01 8.74593e-01 835 2002 12 2.26920e+00 1.14940e+00 378 2003 1 3.06721e+00 1.85411e+00 873 2003 2 2.30682e+00 1.38717e+00 576 2003 3 6.42360e+00 3.70251e+00 448 2003 4 3.69321e+00 3.02888e+00 236 2003 5 9.20569e+00 3.57791e+00 63 2003 6 1.19502e+01 9.04712e+00 573 2003 7 7.76950e+00 6.03828e+00 370 2003 8 5.96385e+00 4.51494e+00 627 2003 9 2.30101e+00 2.30008e+00 763 2003 10 2.09363e+00 2.57344e+00 798 2003 11 5.49621e-01 5.48216e-01 603 2003 12 2.40805e+00 1.70022e+00 545 2004 1 1.03789e+00 7.03940e-01 494 2004 2 1.11693e+00 6.86148e-01 536 2004 3 2.72859e+00 2.20843e+00 620 2004 4 6.64610e+00 4.20822e+00 256 2004 5 1.00887e+01 3.52650e+00 322 2004 6 1.19290e+01 5.38866e+00 690 2004 7 7.25926e+00 6.59261e+00 761 2004 8 5.52470e+00 5.66982e+00 949 2004 9 1.42415e+00 1.24880e+00 751 2004 10 2.59922e+00 1.98514e+00 544 2004 11 4.45262e-01 4.25545e-01 256 2004 12 1.93748e+00 1.83973e+00 595 2005 1 2.00074e+00 1.32784e+00 640 2005 2 7.70907e-01 5.55897e-01 458 2005 3 2.72330e+00 2.09921e+00 724 2005 4 6.81342e+00 3.88944e+00 383 2005 5 5.52640e+00 4.80628e+00 305 2005 6 1.09679e+01 6.57608e+00 427 2005 7 1.48176e+01 5.96807e+00 69 2005 8 5.75008e+00 5.22243e+00 637 2005 9 9.59423e-01 9.53559e-01 907 2005 10 1.68469e+00 1.91058e+00 1039 2005 11 1.37853e+00 1.92233e+00 446 2005 12 1.13731e+00 1.15435e+00 915 2006 1 8.64115e-01 6.84210e-01 591 2006 2 4.14326e-02 5.34945e-02 397 2006 3 2.54090e+00 2.30996e+00 778 2006 4 6.33051e+00 5.21096e+00 442 2006 5 5.40972e+00 4.84330e+00 126 2006 6 6.77044e+00 5.37806e+00 782 2006 7 5.27558e+00 4.38654e+00 246 2006 8 4.48074e+00 4.66164e+00 400 2006 9 7.23186e-01 5.08517e-01 1019 2006 10 2.04184e+00 1.67322e+00 824 2006 11 9.11409e-01 7.61060e-01 770 2006 12 1.25273e+00 7.42381e-01 758 2007 1 2.55551e+00 1.53498e+00 991 2007 2 5.28010e+00 4.13212e+00 752 2007 3 3.91930e+00 2.39800e+00 614 2007 4 9.56267e-01 7.63587e-01 179 2007 5 3.55489e+00 2.33497e+00 61 2007 6 5.59207e+00 4.32312e+00 643 2007 7 7.07395e+00 7.94345e+00 303 2007 8 5.58798e+00 4.09488e+00 654 2007 9 1.47150e+00 2.05049e+00 746 2007 10 9.96229e-01 7.96479e-01 680 2007 11 1.00432e+00 1.07664e+00 788 2007 12 7.65608e-01 5.11185e-01 749 2008 1 6.15150e-01 5.85279e-01 457 2008 2 8.21554e-01 4.45351e-01 391 2008 3 2.36602e+00 2.02157e+00 459 2008 4 8.83085e+00 4.20894e+00 248 2008 5 1.11914e+01 4.21445e+00 64 2008 6 7.06153e+00 6.47280e+00 104 2008 7 2.11945e+00 2.67688e+00 223 2008 8 2.67392e+00 2.61393e+00 151 2008 9 9.41790e-01 9.02507e-01 158 2008 10 5.47962e-01 7.52170e-01 524 2008 11 1.94545e+00 1.51252e+00 561 2008 12 3.02801e+00 2.76889e+00 905 2009 1 1.94205e+00 1.60042e+00 715 2009 2 3.92195e+00 2.35925e+00 225 2009 3 2.76551e+00 1.27834e+00 338 2009 4 1.60418e+00 9.66908e-01 79 2009 5 3.11493e+00 2.08125e+00 135 2009 6 9.41566e+00 6.40556e+00 365 2009 7 7.36052e+00 2.84369e+00 213 2009 8 3.18038e+00 2.37552e+00 248 2009 9 1.90964e+00 1.82883e+00 414 2009 10 3.31872e-01 3.20197e-01 259 2009 11 2.29752e+00 1.54248e+00 301 2009 12 3.21893e+00 2.52608e+00 633 2010 1 2.14721e+00 1.95009e+00 850 2010 2 3.19602e+00 2.04689e+00 453 2010 3 7.05015e+00 4.35588e+00 378 2010 4 4.94223e+00 1.45630e+00 190 2010 5 3.75362e+00 2.78980e+00 256 2010 6 6.14676e+00 5.31119e+00 251 2010 7 1.44528e+01 5.42479e+00 448 2010 8 7.10754e+00 4.00607e+00 122 2010 9 9.80847e-01 1.18880e+00 470 2010 10 6.22248e-01 6.57264e-01 889 2010 11 8.11663e-01 1.09715e+00 1128 2010 12 1.44260e+00 1.12994e+00 780 2011 1 2.40762e+00 1.11533e+00 608 2011 2 2.57095e+00 1.36229e+00 564 2011 3 3.74988e+00 2.02479e+00 536 2011 4 3.05024e+00 1.37860e+00 87 2011 5 4.43542e+00 1.88041e+00 128 2011 6 4.68995e+00 3.20255e+00 379 2011 7 4.75561e+00 5.13231e+00 192 2011 8 1.44749e+01 8.82481e+00 673 2011 9 6.49701e+00 5.60093e+00 678 2011 10 1.79745e+00 1.43245e+00 576 2011 11 9.72554e-01 6.74276e-01 459 2011 12 2.38341e+00 1.43272e+00 1016 2012 1 3.70859e+00 1.93099e+00 685 2012 2 1.41257e+00 7.71318e-01 553 2012 3 1.55261e+00 9.53933e-01 318 2012 4 9.18884e+00 3.61782e+00 192 2012 5 nan nan 0 2012 6 1.17783e+01 7.66426e+00 422 2012 7 1.20411e+01 4.90056e+00 128 2012 8 1.07836e+01 7.92092e+00 667 2012 9 1.79363e+00 1.62729e+00 744 2012 10 2.12788e+00 3.15799e+00 606 2012 11 1.67945e+00 1.32616e+00 583 2012 12 3.13281e+00 2.56087e+00 453 2013 1 4.15120e+00 2.47809e+00 551 2013 2 4.63342e+00 3.23499e+00 737 2013 3 4.35903e+00 2.91492e+00 547 2013 4 3.11890e+00 2.51961e+00 165 2013 5 1.21895e+01 6.57118e+00 256 2013 6 1.25688e+01 9.75360e+00 320 2013 7 1.15991e+01 6.23294e+00 433 2013 8 9.83731e+00 5.31108e+00 896 2013 9 2.47184e+00 1.84964e+00 852 2013 10 2.85648e+00 1.77312e+00 967 2013 11 3.82602e+00 3.08790e+00 554 2013 12 1.91293e+00 1.71390e+00 808 2014 1 3.97654e+00 1.96928e+00 790 2014 2 3.86466e+00 2.20036e+00 704 2014 3 5.16524e+00 3.42176e+00 691 2014 4 3.87392e+00 3.26094e+00 256 2014 5 1.11820e+01 7.20610e+00 464 2014 6 1.03534e+01 5.09717e+00 448 2014 7 5.21348e+00 3.26089e+00 586 2014 8 7.27832e+00 4.76692e+00 499 2014 9 2.88985e+00 2.51546e+00 921 2014 10 7.98154e-01 7.71601e-01 878 2014 11 1.52974e+00 1.47247e+00 882 2014 12 2.02888e+00 1.14281e+00 1212 2015 1 2.78773e+00 1.83886e+00 738 2015 2 5.30513e+00 3.52630e+00 576 2015 3 4.20797e+00 2.48834e+00 558 2015 4 6.41292e+00 3.43567e+00 241 2015 5 7.09820e+00 4.24891e+00 82 2015 6 8.35480e+00 4.90150e+00 609 2015 7 4.96986e+00 3.97861e+00 287 2015 8 7.01195e+00 4.82612e+00 334 2015 9 5.33965e-01 5.29551e-01 209 2015 10 1.07706e+00 1.00494e+00 192 2015 11 1.21762e+00 1.05221e+00 629 2015 12 1.63791e+00 1.57503e+00 749 2016 1 3.64433e+00 1.66711e+00 828 2016 2 4.34537e+00 1.42158e+00 1132 2016 3 1.60178e+00 1.43598e+00 460 2016 4 5.42298e+00 3.24955e+00 562 2016 5 1.32398e+01 6.44909e+00 401 2016 6 1.79154e+01 8.81429e+00 417 2016 7 8.26719e+00 7.06054e+00 725 2016 8 9.79449e+00 6.22056e+00 590 2016 9 4.36288e-01 5.21382e-01 769 2016 10 1.23865e+00 1.27098e+00 670 2016 11 1.83883e+00 1.44265e+00 627 2016 12 1.70796e+00 1.43061e+00 411 2017 1 2.83733e+00 1.55002e+00 752 2017 2 2.68195e+00 1.62100e+00 615 2017 3 3.92783e+00 1.99587e+00 369 2017 4 1.25618e+01 7.61368e+00 259 2017 5 8.92492e+00 2.11353e+00 128 2017 6 6.58191e+00 4.11958e+00 774 2017 7 3.52034e+00 5.40540e+00 347 2017 8 5.71530e+00 6.54154e+00 482 2017 9 6.97989e-02 1.79607e-01 405 2017 10 6.74944e-01 9.35643e-01 431 2017 11 1.02225e+00 6.56632e-01 653 2017 12 1.38055e+00 1.46463e+00 849 2018 1 3.08226e+00 3.30201e+00 896 2018 2 2.45418e+00 1.10498e+00 679 2018 3 1.63364e+00 1.39665e+00 641 2018 4 1.51518e+00 1.05961e+00 265 2018 5 3.58457e+00 2.67133e+00 285 2018 6 1.33878e+01 1.09397e+00 64 2018 7 7.10039e+00 5.27919e+00 437 2018 8 8.67080e+00 4.64101e+00 704 2018 9 5.16643e+00 3.57947e+00 546 2018 10 2.01413e+00 2.40588e+00 381 2018 11 8.01156e-01 6.98163e-01 405 2018 12 1.48652e+00 9.57655e-01 528 2019 1 1.09918e+00 3.95921e-01 264 2019 2 2.33464e+00 1.12778e+00 609 2019 3 3.99649e+00 2.37461e+00 875 2019 4 3.68191e+00 2.29863e+00 491 2019 5 4.28531e+00 3.01313e+00 590 2019 6 8.88317e+00 6.35297e+00 764 2019 7 9.26186e+00 4.05604e+00 502 2019 8 8.33976e+00 6.49582e+00 911 2019 9 3.52653e+00 3.02860e+00 1172 2019 10 8.58612e-01 8.17488e-01 748 2019 11 7.87966e-01 7.36305e-01 640 2019 12 6.13910e-01 3.66611e-01 659 2020 1 9.35945e-01 7.32670e-01 819 2020 2 1.37227e+00 1.11276e+00 683 2020 3 2.14249e+00 2.03642e+00 797 2020 4 2.32766e+00 1.57395e+00 356 2020 5 6.85107e+00 6.75756e+00 254 2020 6 1.24968e+01 6.81970e+00 779 2020 7 1.14740e+01 6.48254e+00 683 2020 8 1.38255e+01 4.29676e+00 476 2020 9 1.32764e+00 1.69861e+00 957 2020 10 1.32768e+00 1.41101e+00 1345 2020 11 1.11984e+00 1.22618e+00 704 2020 12 3.73856e-01 2.35745e-01 466 2021 1 9.40392e-01 4.73224e-01 719 2021 2 1.25909e+00 7.00839e-01 785 2021 3 1.28786e+00 9.85610e-01 573 2021 4 4.28240e+00 2.58885e+00 113 2021 5 1.09109e+01 7.24907e+00 396 2021 6 7.91630e+00 7.57888e+00 509 2021 7 1.54037e+01 5.93292e+00 862 2021 8 6.19027e+00 4.57615e+00 599 2021 9 1.51391e+00 1.93259e+00 1085 2021 10 1.09625e+00 1.15514e+00 1270 2021 11 1.03295e+00 7.29189e-01 669 2021 12 8.47247e-01 4.49411e-01 507 2022 1 2.40359e+00 1.71966e+00 592 2022 2 3.01443e+00 1.36668e+00 866 2022 3 1.44576e+00 8.88143e-01 512 2022 4 2.42929e-01 9.30455e-02 61 2022 5 8.15751e+00 2.26167e+00 181 2022 6 7.81970e+00 4.59878e+00 486 2022 7 1.82375e+01 8.76098e+00 122 2022 8 9.92497e+00 5.44971e+00 327 2022 9 1.95391e+00 1.94295e+00 592 2022 10 1.61064e+00 1.35382e+00 1054 2022 11 2.01941e+00 1.22278e+00 314 2022 12 3.52801e+00 2.29728e+00 682 2023 1 5.57394e+00 2.51257e+00 592 2023 2 2.96160e+00 1.84928e+00 512 2023 3 6.60795e+00 2.19201e+00 834 2023 4 1.14983e+01 3.94940e+00 899 2023 5 1.18494e+01 3.30520e+00 330 2023 6 1.47537e+01 4.72590e+00 691 2023 7 1.35266e+01 5.12167e+00 960 2023 8 8.70056e+00 4.03485e+00 611 2023 9 8.21856e-01 1.06890e+00 885 2023 10 1.36736e+00 1.75434e+00 742 2023 11 9.87223e-01 9.75420e-01 718 2023 12 1.73054e+00 1.33627e+00 742 2024 1 2.18029e+00 1.29236e+00 1093 2024 2 3.37808e+00 1.65561e+00 1024 2024 3 3.02028e+00 1.58284e+00 763 2024 4 9.38267e+00 4.42267e+00 162